package collention;

import java.util.*;
import java.util.Collection;

public class SortInteger {
    public static void main(String[] args) {
        Random rand=new Random();
        List<Integer> list=new ArrayList<>();
        for(int i=0;i<10;i++){
            list.add(rand.nextInt(100));
        }
        System.out.println("原始数据"+list);
        Collections.sort(list);
        System.out.println("排序后的list:"+list);
        Collections.reverse(list);
        System.out.println("list反转"+list);
        System.out.println("第一个元素"+list.get(0));



    }

}
